BUSHING 8P0389 - Caterpillar

Table 2
Associated Diagnostic Trouble Codes
102-18
2489-13
3487-13
3480-15
3480-16
3480-17
3480-18
3556-7
4077-15
4077-16
4077-17
4077-18
E1050
E1051
E1052
E1053
Table 3
Troubleshooting Test Steps Values Results
1. Check for Associated Diagnostic Trouble Codes
A. Establish communication between Cat ET and the Electronic Control Module (ECM). Refer to Troubleshooting, "Electronic Service Tools", if necessary.
B. Download the "Warranty Report" from the engine ECM before performing any troubleshooting or clearing diagnostic trouble codes.
C. Table 2 lists the diagnostic trouble codes that are associated with the E593 (2) or 3711-31 code. Determine if any of the codes in Table 2 are present.
Diagnostic code
Result: An associated diagnostic trouble code is not present.
Proceed to Test Step 2.
Result: An associated diagnostic trouble code is present.
Troubleshoot the associated diagnostic code.
2. Check the Current Flow Through the Heater
A. Verify that the engine is off. Check the current flow through the heater. Refer to Systems Operation/Testing and Adjusting, "ARD Nozzle Heater - Test" for the correct procedure.
Between 7.0 A and 14 A for a 12 V system. Or, between 3.5 A and 7 A for a 24 V system
The current flow is between 7.0 A and 14 A for a 12 V system. Or, the current flow is between 3.5 A and 7 A for a 24 V system.
Result: The current flow is OK.
Proceed to Test Step 3.
Result: The current flow is not between 7.0 A and 14 A for a 12 V system. Or, the current flow is not between 3.5 A and 7 A for a 24 V system.
There may be a problem with the ARD nozzle. Refer to Troubleshooting, "ARD Nozzle - Test".
3. Inspect the Tubing between the Compressor and the Combustion Air Valve
A. Inspect the tube between the compressor and the combustion air valve.
B. Check for cracks in the tubing.
C. Check for loose hardware or damaged hardware.
Tubing
Result: The tube is not damaged or cracked.
Proceed to Test Step 4.
Result: The tube is damaged or cracked.
Repair: Replace the tubing or repair the tubing.
Proceed to Test Step 5.
4. Inspect the Tubing from the Combustion Air Valve to the Combustion Air Absolute Pressure Sensor
A. Inspect the tubing from the combustion air valve to the combustion air absolute pressure sensor.
B. Check for cracks in the tubing.
C. Check for air leaks.
D. Check the clamps on the tube. Make sure that the clamps are tight.
Tubing
Result: The tube is damaged or cracked.
Repair: Replace the tubing or repair the tubing.
Proceed to Test Step 5.
Result: The tube is not damaged.
Repair: Replace the combustion air valve. Refer to Disassembly and Assembly, "Air Control Valve - Remove and Install".
Proceed to Test Step 5.
Table 4
Troubleshooting Test Steps Values Results
5. Perform the "ARD Air System Service Test"
A. Reset all active codes and clear all logged codes. Use Cat ET to perform an "ARD Air System Service Test" to verify that the problem is resolved.
ARD Air System Service Test
Result: The "ARD Air System Service Test" passed.
Proceed to Test Step 6.
Result:The "ARD Air System Service Test" failed.
Repair: There is a problem with the ARD combustion air system. Refer to Troubleshooting, "ARD Combustion Air - Test"
6. Perform a "Manual DPF Regeneration"
This test must be performed through Cat ET. The